body{
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Helvetica, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", SimSun, sans-serif;
    padding: 0;
    margin: 0;
}
img{
    position:relative;
    left: 24%;
    transition: 0.2s;
}
.def0{
    position: relative;
    left: 24%;
    width: 50%;
    height: 50%;
}
.stress{
    color: brown;
    position: relative;
    left: 40%;
    font-size: 50px;
}
.def1{
    position: absolute;
    left: 12%;
    top: 133%;
}
li>.def2{
    position: relative;
    left: -48%;
    width: 7%;
    height: 8%;
    z-index: 10;
    opacity:0.4;
    filter:alpha(opacity=40); 
}
.def2:hover{
    width: 15%;
    height: 15%;
    opacity:1.0;
    filter:alpha(opacity=100);
}
li>.def3{
    position: relative;
    left: -44%;
    width: 7%;
    height: 8%;
    z-index: 10;
    opacity:0.4;
    filter:alpha(opacity=40); 
}
.def3:hover{
    width: 15%;
    height: 15%;
    opacity:1.0;
    filter:alpha(opacity=100);
}
li>.def4{
    position: relative;
    left: -40%;
    width: 7%;
    height: 8%;
    z-index: 10;
    opacity:0.4;
    filter:alpha(opacity=40); 
}
.def4:hover{
    width: 15%;
    height: 15%;
    opacity:1.0;
    filter:alpha(opacity=100);
}
li>.def5{
    position: relative;
    left: -36%;
    width: 7%;
    height: 10%;
    z-index: 10;
    opacity:0.4;
    filter:alpha(opacity=40); 
}
.def5:hover{
    width: 15%;
    height: 15%;
    opacity:1.0;
    filter:alpha(opacity=100);
}
h1{
    z-index: 1000;
    color: rgb(3, 177, 26);
    text-align: center;
    font-weight:bold;
    font-size:60px;
}
li{
    position: absolute;
    left: 10%;
    color: darkorange;
    font-size:30px;
}
.container {
    width: 800px;
    margin: 0 auto;
    padding: 10px 20px;
    margin-top: 0;
    background-image: url("https://ss1.bdstatic.com/70cFuXSh_Q1YnxGkpoWK1HF6hhy/it/u=311050704,3226129235&fm=26&gp=0.jpg")
}
#customers
  {
  font-family:"Trebuchet MS", Arial, Helvetica, sans-serif;
  width:70%;
  height:30%;
  border-collapse:collapse;
  margin: 0 auto;
  }

#customers td, #customers th 
  {
  font-size:30px;
  border:1px solid #7c8061;
  padding:3px 7px 2px 7px;
  color: #217ace;
  }

#customers th 
  {
  font-size:30px;
  text-align:left;
  padding-top:5px;
  padding-bottom:4px;
  background-color:rgb(200, 223, 132);
  color:#181412;
  }

#customers tr.alt td 
  {
  color:#60b150;
  background-color:rgb(118, 121, 112);
  }
a:link {text-decoration:none;}   
a:visited {text-decoration:none;}
a:hover {text-decoration:underline;}
a:active {text-decoration:underline;}
h3{
    text-align: center;
}
.center
{
margin:auto;
width:70%;
}
body {background-image:url("");
    background-position:center;
    background-size: 100%;
}
div
{
position: absolute;
width:0px;
height:30px;
top:5.8%;
background: rgb(99, 95, 95);
animation:myfirst 2s;
animation-fill-mode: forwards;
z-index: -10;
}
@keyframes myfirst
{
from {
    width:0px;
    height:81px;}
to {width:100%;
    height:81px;}
}

.container{
    width: 10%;
    height: 10%;
}

li>img{
    position: relative;
    width: 3%;
    height: 3%;
    top: 2%;
    left: -17%;
}